<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        html{
            /* 按照750px的设计尺寸 */
            /* 1vw = 750px/100vw = 7.5px, 50px = 6.67vw */
            font-size: 6.67vw;
        }
        body{
            /* font-size: 24px */
            font-size: 3.2vw;
            margin: 0;
        }
    </style>
</head>
<body>
    <div id="root"></div>
</body>
</html>